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MINOR: quic: Wrong RX buffer tail handling when no more contiguous data

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The producer must know where is the tailing hole in the RX buffer
when it purges it from consumed datagram. This is done allocating
a fake datagram with the remaining number of bytes which cannot be produced
at the tail of the RX buffer as length.
This commit is contained in:
Frédéric Lécaille 2022-01-28 13:10:24 +01:00 committed by Amaury Denoyelle
parent dc36404c36
commit 1712b1df59
1 changed files with 11 additions and 0 deletions
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11
src/quic_sock.c
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@ -209,6 +209,17 @@ void quic_sock_fd_iocb(int fd)
max_sz = params->max_udp_payload_size;
cspace = b_contig_space(buf);
if (cspace < max_sz) {
struct quic_dgram *dgram;
/* Allocate a fake datagram, without data to locate
* the end of the RX buffer (required during purging).
*/
dgram = pool_zalloc(pool_head_quic_dgram);
if (!dgram)
goto out;
dgram->len = cspace;
LIST_APPEND(&rxbuf->dgrams, &dgram->list);
/* Consume the remaining space */
b_add(buf, cspace);
if (b_contig_space(buf) < max_sz)